Add reactstrap Spinner and SpinnerProps types

The Spinner component was added to reactstrap here: reactstrap/reactstrap#1352

types/reactstrap/index.d.ts

@@ -221,6 +221,9 @@ export { ProgressProps } from './lib/Progress';
 import { default as Row_ } from './lib/Row';
 export class Row<T = {}> extends Row_<T> {}
 export { RowProps } from './lib/Row';
+import { default as Spinner_ } from './lib/Spinner';
+export class Spinner<T = {}> extends Spinner_<T> {}
+export { SpinnerProps } from './lib/Spinner';
 import { default as TabContent_ } from './lib/TabContent';
 export class TabContent<T = {}> extends TabContent_<T> {}
 export { TabContentProps } from './lib/TabContent';

types/reactstrap/lib/Spinner.d.ts

@@ -0,0 +1,14 @@
+import * as React from 'react';
+import { CSSModule } from '../index';
+
+export type SpinnerProps<T = {}> = React.HTMLAttributes<HTMLElement> & {
+  children?: string;
+  className?: string;
+  color?: string;
+  cssModule?: CSSModule;
+  size?: string;
+  type?: string;
+} & T;
+
+declare class Spinner<T = {[key: string]: any}> extends React.Component<SpinnerProps<T>> {}
+export default Spinner;